526
FNCA52 TJSJ 090730
FWFSJU
FIRE WEATHER PLANNING FORECAST FOR PUERTO RICO
NATIONAL WEATHER SERVICE SAN JUAN PR
330 AM AST SAT MAY 9 2026
DISCUSSION
NO FIRE DANGER IS EXPECTED TODAY.
PRZ014-092000-
SOUTHEAST COASTAL PLAINS-
330 AM AST SAT MAY 9 2026
TODAY TONIGHT SUN
CLOUD COVER MCLEAR MCLEAR MCLEAR
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 10 20 20
TEMP (24H TREND) 90 (+2) 72 (-1) 89
RH % (24H TREND) 51 (-5) 89 (+2) 55
WIND 20FT/EARLY(MPH) E 18 E 16 E 17
WIND 20FT/LATE(MPH) E 20 NE 12 E 18
MIXING HGT(FT-AGL/MSL)6120 5590
TRANSPORT WND (MPH) E 17 E 18
VENT RATE (KT-FT) 91800 89440
DISPERSION 5 5
DSI 6 4 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ015-092000-
SOUTHERN HILLS-
330 AM AST SAT MAY 9 2026
TODAY TONIGHT SUN
CLOUD COVER MCLEAR MCLEAR PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 10 10 20
TEMP (24H TREND) 86 (+2) 68 (-2) 86
RH % (24H TREND) 56 (-3) 95 (+5) 61
WIND 20FT/EARLY(MPH) E 14 E 13 E 13
WIND 20FT/LATE(MPH) E 14 E 14 E 14
MIXING HGT(FT-AGL/MSL)6660 6320
TRANSPORT WND (MPH) E 15 E 18
VENT RATE (KT-FT) 86580 101120
DISPERSION 5 5
DSI 6 3 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ016-092000-
NORTH COASTAL PLAINS-
330 AM AST SAT MAY 9 2026
TODAY TONIGHT SUN
CLOUD COVER MCLEAR MCLEAR PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 10 20 30
TEMP (24H TREND) 89 (0) 72 (-1) 90
RH % (24H TREND) 55 (-2) 94 (+4) 57
WIND 20FT/EARLY(MPH) E 14 E 20 E 16
WIND 20FT/LATE(MPH) E 21 E 16 E 21
MIXING HGT(FT-AGL/MSL)5570 5760
TRANSPORT WND (MPH) E 17 E 18
VENT RATE (KT-FT) 83550 92160
DISPERSION 5 5
DSI 6 6 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ017-092000-
NORTHERN HILLS-
330 AM AST SAT MAY 9 2026
TODAY TONIGHT SUN
CLOUD COVER MCLEAR MCLEAR MCLEAR
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 10 10 20
TEMP (24H TREND) 87 (0) 69 (-2) 88
RH % (24H TREND) 57 (0) 95 (+3) 58
WIND 20FT/EARLY(MPH) E 13 E 18 E 14
WIND 20FT/LATE(MPH) E 18 E 12 E 18
MIXING HGT(FT-AGL/MSL)6380 7060
TRANSPORT WND (MPH) E 14 E 14
VENT RATE (KT-FT) 76560 84720
DISPERSION 5 5
DSI 6 4 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ018-092000-
WEST COAST-
330 AM AST SAT MAY 9 2026
TODAY TONIGHT SUN
CLOUD COVER MCLEAR MCLEAR MCLEAR
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 50 10 20
TEMP (24H TREND) 91 (+2) 71 (-1) 91
RH % (24H TREND) 55 (-3) 93 (+1) 57
WIND 20FT/EARLY(MPH) E 12 E 17 E 14
WIND 20FT/LATE(MPH) E 14 E 14 E 16
MIXING HGT(FT-AGL/MSL)6110 5570
TRANSPORT WND (MPH) E 9 E 13
VENT RATE (KT-FT) 48880 61270
DISPERSION 5 5
DSI 6 4 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ019-092000-
EASTERN INTERIOR-
330 AM AST SAT MAY 9 2026
TODAY TONIGHT SUN
CLOUD COVER MCLEAR PCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 20 30 40
TEMP (24H TREND) 87 (+1) 69 (-3) 87
RH % (24H TREND) 57 (0) 95 (+4) 62
WIND 20FT/EARLY(MPH) E 13 E 14 E 16
WIND 20FT/LATE(MPH) E 13 E 16 E 14
MIXING HGT(FT-AGL/MSL)6760 6420
TRANSPORT WND (MPH) E 15 E 17
VENT RATE (KT-FT) 87880 96300
DISPERSION 5 5
DSI 6 4 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ022-092000-
LUQUILLO MOUNTAIN RANGE-
330 AM AST SAT MAY 9 2026
TODAY TONIGHT SUN
CLOUD COVER PCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 30 30 40
TEMP (24H TREND) 82 (+2) 68 (-2) 82
RH % (24H TREND) 64 (0) 98 (+4) 69
WIND 20FT/EARLY(MPH) E 12 E 12 E 13
WIND 20FT/LATE(MPH) E 12 E 12 E 12
MIXING HGT(FT-AGL/MSL)5250 5140
TRANSPORT WND (MPH) E 16 E 18
VENT RATE (KT-FT) 73500 82240
DISPERSION 5 5
DSI 6 6 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ023-092000-
CENTRAL MOUNTAIN RANGE-
330 AM AST SAT MAY 9 2026
TODAY TONIGHT SUN
CLOUD COVER MCLEAR MCLEAR MCLEAR
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 30 0 30
TEMP (24H TREND) 86 (+4) 66 (-2) 87
RH % (24H TREND) 57 (-4) 97 (+4) 61
WIND 20FT/EARLY(MPH) E 9 E 12 E 11
WIND 20FT/LATE(MPH) E 11 E 11 E 11
MIXING HGT(FT-AGL/MSL)7170 7890
TRANSPORT WND (MPH) E 12 E 12
VENT RATE (KT-FT) 71700 78900
DISPERSION 5 5
DSI 6 3 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ024-092000-
CAYEY MOUNTAIN RANGE-
330 AM AST SAT MAY 9 2026
TODAY TONIGHT SUN
CLOUD COVER MCLEAR PCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 20 30 30
TEMP (24H TREND) 82 (+1) 68 (-2) 82
RH % (24H TREND) 63 (+2) 97 (+3) 68
WIND 20FT/EARLY(MPH) E 12 E 12 E 11
WIND 20FT/LATE(MPH) E 12 E 11 E 12
MIXING HGT(FT-AGL/MSL)5980 5640
TRANSPORT WND (MPH) E 17 E 18
VENT RATE (KT-FT) 89700 90240
DISPERSION 5 5
DSI 6 4 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ025-092000-
VIEQUES-
330 AM AST SAT MAY 9 2026
TODAY TONIGHT SUN
CLOUD COVER PCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 30 30 40
TEMP (24H TREND) 86 (0) 74 (-2) 87
RH % (24H TREND) 59 (+2) 89 (+4) 62
WIND 20FT/EARLY(MPH) E 14 E 19 E 17
WIND 20FT/LATE(MPH) E 17 E 18 E 16
MIXING HGT(FT-AGL/MSL)4130 3870
TRANSPORT WND (MPH) E 18 E 23
VENT RATE (KT-FT) 66080 77400
DISPERSION 5 5
DSI 6 6 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ026-092000-
CULEBRA-
330 AM AST SAT MAY 9 2026
TODAY TONIGHT SUN
CLOUD COVER PCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 20 30 40
TEMP (24H TREND) 89 (+2) 76 (-1) 89
RH % (24H TREND) 57 (-2) 87 (+3) 60
WIND 20FT/EARLY(MPH) E 14 E 19 E 17
WIND 20FT/LATE(MPH) E 17 E 18 E 17
MIXING HGT(FT-AGL/MSL)4090 3920
TRANSPORT WND (MPH) E 18 E 23
VENT RATE (KT-FT) 65440 78400
DISPERSION 5 5
DSI 6 6 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ027-092000-
SOUTHWEST COASTAL PLAINS AND MONA ISLAND-
330 AM AST SAT MAY 9 2026
TODAY TONIGHT SUN
CLOUD COVER MCLEAR MCLEAR MCLEAR
PRECIP TYPE SHOWERS NONE SHOWERS
CHANCE PRECIP (%) 20 0 20
TEMP (24H TREND) 91 (+2) 72 (-1) 91
RH % (24H TREND) 51 (-4) 88 (+3) 54
WIND 20FT/EARLY(MPH) E 17 E 16 E 20
WIND 20FT/LATE(MPH) SE 20 E 12 SE 21
MIXING HGT(FT-AGL/MSL)6350 5660
TRANSPORT WND (MPH) E 15 E 22
VENT RATE (KT-FT) 82550 107540
DISPERSION 5 5
DSI 6 4 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
VIZ001-092000-
SAINT THOMAS AND SAINT JOHN-
330 AM AST SAT MAY 9 2026
TODAY TONIGHT SUN
CLOUD COVER MCLEAR PCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 10 20 40
TEMP (24H TREND) 86 (+1) 75 (-2) 86
RH % (24H TREND) 59 (-2) 89 (+7) 63
WIND 20FT/EARLY(MPH) E 16 E 19 E 18
WIND 20FT/LATE(MPH) E 17 E 19 E 17
MIXING HGT(FT-AGL/MSL)3930 3770
TRANSPORT WND (MPH) E 20 E 23
VENT RATE (KT-FT) 66810 75400
DISPERSION 5 5
DSI 6 6 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
VIZ002-092000-
ST CROIX-
330 AM AST SAT MAY 9 2026
TODAY TONIGHT SUN
CLOUD COVER MCLEAR MCLEAR PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 10 20 40
TEMP (24H TREND) 87 (+1) 73 (-3) 87
RH % (24H TREND) 59 (-3) 91 (+6) 63
WIND 20FT/EARLY(MPH) E 16 E 18 E 17
WIND 20FT/LATE(MPH) E 17 E 18 E 17
MIXING HGT(FT-AGL/MSL)5150 4780
TRANSPORT WND (MPH) E 20 E 23
VENT RATE (KT-FT) 87550 95600
DISPERSION 5 5
DSI 6 6 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
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